Ⅳ.自住院的腮腺炎病人(有或无脑膜脑炎)尿中分离病毒自1968年10月至1970年12月对住Roslagstull传染病院的114例腮腺炎病人采取了185份尿标本。其中77例(68％)患有脑膜脑炎,29例(25％)患有睾丸炎。自前者采取尿及脑脊液,后者采取多次尿以分离病毒。从73例(63％)中采取血液标本作补体结合反应。 0～9岁组(Ⅰ组)的脑膜脑炎组(A组)病毒分离阳性率为47％(16/34),单纯腮腺炎组(B组)阳性率为41％(7/17);10～14岁组(Ⅱ组)的A组阳性率为46％(6/13),B组为29％(2/7);≥15 IV. Isolation of urine from in-hospital mumps (with or without meningoencephalitis) Urine samples were taken from 114 patients with mumps in the Roslagstull Infectious Diseases Hospital from October 1968 to December 1970. Of these, 77 (68%) had meningoencephalitis and 29 (25%) had orchitis. Since the former to take urine and cerebrospinal fluid, which take multiple urine to separate the virus. Blood samples were taken from 73 patients (63%) for complement fixation. The positive rates of virus isolation in meningoencephalitis group (group A) were 47% (16/34) in group 0 to 9 years old (group Ⅰ), and 41% (7/17) in group mumps. The positive rate of group A was 46% (6/13) in group 10-14 years old (group Ⅱ), 29% (2/7) in group B;